DTC P0155 Ho2S Heater Circuit (Bank 2/Sensor 1: DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	Possible cause
DTC Strategy	Compares the current that is passing through the O2 Heater to a low limit	Poor Connection Contact Resistance HO2S (B2/S1) PCM
Enable Conditions	Engine Running > 60sec Heater Duty Cycle > 0.4% Max. Duty Cycle - Min. Duty Cycle < 0.05% Above conditions are met ≥ 5sec
Threshold value	Filtered O2 Heater Current < threshold value
Diagnosis Time	Continuous (More than 2.5 second failure for every 5 second test)
MIL On Condition	2 Driving Cycles